Problem 5
d = 29 = diameter
r = d/2 = 29/2 = 14.5 = radius
SA = surface area of sphere
SA = 4*pi*r^2
SA = 4*pi*(14.5)^2
SA = 841pi
SA = 841*3.14
SA = 2,640.74 square inches
To convert from square inches to square feet, we divide by 144. This is because 12^2 = 144.
2,640.74 square inches = (2,640.74)/144 = 18.3 sq ft
<h3>Answer:
18.3 square feet (approximate)</h3>
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Problem 6
d = 10.7 = diameter
r = d/2 = 10.7/2 = 5.35 = radius
L = 22.3 = slant height
SA = surface area of the cone
SA = pi*r^2 + pi*r*L
SA = pi*(5.35)^2 + pi*5.35*22.3
SA = 147.9275pi
SA = 147.9275*3.14
SA = 464.49235
<h3>Answer:
464.49235 square cm (approximate)</h3>
Answer:
2000
Step-by-step explanation:
diameter of an average cell= 1 x 10^-5 mm
diameter of a pin head= 2 x 10^-2
number of body cells that would fit on the pin head=2 x 10^-2 ÷ 1 x 10^-5
=2000 body cells
Answer:
10
Step-by-step explanation:
(x - 4) × 2 = 12
x - 4 = 12 ÷ 2
x - 4 = 6
x = 10
Answer: The correct answer is D
Step-by-step explanation: you have to factor the polynomial
Answer:
Step-by-step explanation:
A recipe for four batches of bread uses 5 cups of flour.
Firstly, we want to determine the number of cups of flour needed to produce one batch of bread. This means we want to determine the unit rate of producing batches of bread. It becomes
If four batches of bread uses 5 cups of flour,
Then 1 batch of bread will use x cups of flour
4x = 5
x = 5/4 = 1.25
1 batch of bread will require 1.25 cups of flour
Secondly, we want do determine how many batches of bread that can be made using 1 cup of flour. It becomes
If four batches of bread uses 5 cups of flour, then
y batches of bread will need 1 cup of flour
5y = 4
y = 4/5 = 0.8
1 cup of flour will produce 0.8 batch of bread
